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Article #552C compiler trivium
From: jas
Date: Thu, 22 May 1986 23:35
Date: Thu, 22 May 1986 23:35
33 lines
1135 bytes
1135 bytes
Those with pcc-based C compilers may be surprised by the output
of the following program:
int x;
main()
{
int *ip = &x;
switch( (int) ip )
{
case &x:
printf( "x\n" );
break;
default:
printf( "other\n" );
break;
}
exit( 0 );
}
This compiles without a complaint on a 3B5 running System V, a Microvax II
running Ultrix, and a CCI Power 6 running CCI's 4.2 port. The output
is "other". For a clue to what's going on, add a second global int 'y',
and insert its address as another case in the switch.
Jim Shankland
..!ucbvax!mtxinu!\
rtech!jas
..!ihnp4!cpsc6a!/
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!decwrl!nsc!amdahl!rtech!jas From: jas@rtech.UUCP Newsgroups: net.bugs,net.lang.c Subject: C compiler trivium Message-ID: <271@rtech.UUCP> Date: Thu, 22-May-86 19:35:29 EDT Article-I.D.: rtech.271 Posted: Thu May 22 19:35:29 1986 Date-Received: Sun, 25-May-86 11:40:15 EDT Distribution: net Organization: Relational Technology Inc, Alameda CA Lines: 33